Conair VL Series USE of Plain Glycol, Automotive Based Antifreeze, Maintenance Responsibility

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C.USE OF PLAIN GLYCOL:

1.Even through they do lower the freeze point, plain glycols are even more corrosive than water. The corrosion rate of plain ethylene glycol on iron, for example, is more than 2.5 times faster than plain water. On steel, it is 4.5 times faster.

D.AUTOMOTIVE BASED ANTIFREEZE:

1.SHOULD NEVER BE USED! Automotive antifreeze contains silicate based inhibitors, which are compatible with automotive components. In an industrial application, the silicates will leach out and form a gel-like substance on the heat transfer surfaces and reduce cooling efficiency of the system. These silicates have shown to significantly reduce the lifetime of pump seals.

E.MAINTENANCE RESPONSIBILITY:

1.A hygrometer should be used on a regular basis to determine the mixture strength according to freeze point. The freeze point temperature should be 25°F below the lowest required setpoint (see charts on page 35 and 37). Water will evaporate from the mixture, and if you continue to add a premixed solution, eventually you will have too much glycol. It is necessary to add water or glycol to maintain proper freeze point temperature. The device pictured is by far the most accurate and easy to use for maintaining and checking for proper glycol levels.

Contact: Misco Products: 1-800-358-1100 Model #7084VP

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VL Series Portable Chillers, 0.25 to 1.5 Tons

UGH020/0301

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Contents Portable Chillers Date Manual Number UGH020/0301 Serial numbers Model numbers Troubleshooting Table of Contents GeneralInstallation MaintenanceVL Series Portable Chillers, 0.25 to 1.5 Tons UGH020/0301 General Unit Location SafetyClean AIR ACT EfficiencyMiscellaneous VL Series Portable Chillers, 0.25 to 1.5 Tons UGH020/0301 Installation To and from Process Connections Drain Connection AIR Cooled CondenserControl Circuit Wiring Electrical Connection Nema 1 ModelsOperations Start UP/OPERATIONS Procedure System Fill Front Keypad OperationsInstrument Operation General Description Description of Parameters Parameters Defaults Error Annunciation Shut DOWN/DISCONNECT Sequence PRECAUTIONS/WARNINGSTroubleshooting Unit will not Start Unit Shuts Down on High Pressure SwitchUnit Shuts Down on LOW Pressure Switch Pump will not StartPage VL Series Portable Chillers, 0.25 to 1.5 Tons UGH020/0301 Maintenance Warranty Service Procedure Periodic Preventative MaintenanceSpecial Maintenance Pump RepairVL Series Portable Chillers, 0.25 to 1.5 Tons UGH020/0301 Components Water System Refrigeration SystemRelated Drawings Electrical Drawing Typical PumpCircuit Schematic Item Description This page Intentionally Blank Appendix Specifications VL Air-cooled Portable Chillers 0.25 to 1.5 tonsWater Supply Operation below 48FFreeze Protection Safety Adjustments PrecautionsChoosing the Proper Glycol Water Quality ControlInhibited Propylene Glycol Automotive Based Antifreeze Maintenance ResponsibilityUSE of Plain Glycol Chiller Capacity and Derate Chart CapacityPRESSURE-TEMPERATURE Chart for R-22 Refrigerant Freon PressureUseful Engineering Formulas Parts List Description Call Equipment Guarantee Performance Warranty
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0.25 to 1.5 ton, VL Series specifications

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